In 1967, the experimental racing team led by Colin Chapman launched the Lotus 49, a monoposto that revolutionized Formula 1 in several ways. The ingenious Ford-Cosworth V8 engine was particularly ground-breaking and shaped the premier class in the years that followed. But Lotus also did pioneering work in aerodynamic terms with the further development of the Type 49. The 17th episode of the series "Technology in racing cars" deals with the Lotus 49 and the Ford-Cosworth DFV.